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soc/intel/apollolake: Configure PCIe root port #1 for APL WiFi 

APL uses PCIe root port 1 (PCIe ID 14.0) for discrete PCIe wifi card.

BUG=None
BRANCH=None
TEST=Use Stone Peak discrete wifi card and test s0ix.

Change-Id: Ia81722f4533916fe93009a73d86765e5de9dab08
Signed-off-by: Venkateswarlu Vinjamuri <venkateswarlu.v.vinjamuri@intel.com>
Reviewed-on: https://review.coreboot.org/25637
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
This commit is contained in:
Venkateswarlu Vinjamuri 2018-04-09 11:14:42 -07:00 committed by Patrick Georgi
parent a4e8f67b94
commit efeb6903fe
2 changed files with 4 additions and 106 deletions
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108
src/soc/intel/apollolake/acpi/pcie.asl
View File

@ -13,114 +13,12 @@
* GNU General Public License for more details.
*/
/* PCIe Ports */
Device (RP01)
{
Name (_ADR, 0x00140000)
Name (_DDN, "PCIe-B 0")
Name (PDST, 0) /* present Detect status */
/* lowest D-state supported by
* PCIe root port during S0 state
*/
Name (_S0W, 4)
/* Dynamic Opregion needed to access registers
* when the controller is in D3 cold
*/
OperationRegion (PX01, PCI_Config, 0x00, 0xFF)
Field (PX01, AnyAcc, NoLock, Preserve)
{
Offset(0x5A),
, 6,
PDS, 1, /* 6, Presence detect Change */
Offset(0xE2), /* RPPGEN - Root Port Power Gating Enable */
, 2,
L23E, 1, /* 2, L23_Rdy Entry Request (L23ER) */
L23R, 1, /* 3, L23_Rdy to Detect Transition (L23R2DT) */
Offset(0xF4), /* BLKPLLEN */
, 10,
BPLL, 1,
}
OperationRegion (PX02, PCI_Config, 0x338, 0x4)
Field (PX02, AnyAcc, NoLock, Preserve)
{
, 26,
BDQA, 1 /* BLKDQDA */
}
PowerResource (PXP, 0, 0)
{
/* Define the PowerResource for PCIe slot */
Method (_STA, 0, Serialized)
{
Store (PDS, PDST)
If (LEqual (PDS, 1)) {
Return (0xf)
} Else {
Return (0)
}
}
Method (_ON, 0, Serialized)
{
If (LAnd (LEqual (PDST, 1), LNotEqual (\PRT0, 0))) {
/* Enter this condition if device
* is connected
*/
/* De-assert PERST */
\_SB.PCI0.PRDA (\PRT0)
Store (0, BDQA) /* Set BLKDQDA to 0 */
Store (0, BPLL) /* Set BLKPLLEN to 0 */
/* Set L23_Rdy to Detect Transition
* (L23R2DT)
*/
Store (1, L23R)
Sleep (16)
Store (0, Local0)
/* Delay for transition Detect
* and link to train
*/
While (L23R) {
If (Lgreater (Local0, 4)) {
Break
}
Sleep (16)
Increment (Local0)
}
} /* End PDS condition check */
}
Method (_OFF, 0, Serialized)
{
/* Set L23_Rdy Entry Request (L23ER) */
If (LAnd (LEqual (PDST, 1), LNotEqual (\PRT0, 0))) {
/* enter this condition if device
* is connected
*/
Store (1, L23E)
Sleep (16)
Store (0, Local0)
While (L23E) {
If (Lgreater (Local0, 4)) {
Break
}
Sleep (16)
Increment (Local0)
}
Store (1, BDQA) /* Set BLKDQDA to 1 */
Store (1, BPLL) /* Set BLKPLLEN to 1 */
/* Assert PERST */
\_SB.PCI0.PRAS (\PRT0)
} /* End PDS condition check */
} /* End of Method_OFF */
} /* End PXP */
Name(_PR0, Package() { PXP })
Name(_PR3, Package() { PXP })
#include "pcie_port.asl"
}

2
src/soc/intel/apollolake/chip.c
View File

@ -111,7 +111,7 @@ static const char *soc_acpi_name(const struct device *dev)
case PCH_DEVFN_SDIO:
return "SDIO";
/* PCIe */
case PCH_DEVFN_PCIE1:
case PCH_DEVFN_PCIE5:
return "RP01";
}